Reference from Umamusume Character, Mejiro Ardan.
Pony is running under different base then usual SD format quality prompt, please look into Ponydiffusion page checkpoint or refer to below instruction.
If you feel your VRAM are not up to SDXL gen, consider try out SD Forge:
https://github.com/lllyasviel/stable-diffusion-webui-forge
Is a improved and way better A1111 which giving you an edge to use SDXL gen with lower VRAM
Simplify about Model:
default weight is recommended
Hires and Adetailer a recommended
Quality Prompt ``score_9, score_8_up, score_7_up``
Avoid using negative prompt as much possible, it could affecting the quality of your image.
Recommend to run with IncursioMeme(Pony)/AutismMix(Pony) and Ponydiffusion
About Image Gen:
The image preview are generate with forge webui.
All Image are produce with Model IncursioMeme(Pony).